#1F104E#1F104E

#1F104E is a very dark, moderate violet. Relative luminance 0.012; OKLCH L 24.1% C 0.106 H 286.5°. Best body text is #FFFFFF at 16.90:1 contrast (WCAG AA passes).

Color values

HEX	#1F104E
RGB	rgb(31, 16, 78)
HSL	hsl(255, 66%, 18%)
HSV	hsv(255, 79%, 31%)
CMYK	cmyk(60.3%, 79.5%, 0%, 69.4%)
CIE-LAB	lab(10.64, 26.01, -35.42)
CIE-LCH	lch(10.64, 43.94, 306.30°)
OKLab	oklab(24.12% 0.0302 -0.1019)
OKLCH	oklch(24.12% 0.106 286.5)
XYZ	xyz(2.1251, 1.2118, 7.3282)
Luminance	0.0121 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F104E #3F4E10

analogous

#10204E #1F104E #3E104E

triadic

#1F104E #4E1F10 #104E1F

tetradic

#1F104E #4E1020 #3F4E10 #104E3E

square

#1F104E #4E1020 #3F4E10 #104E3E

split-complementary

#1F104E #4E3E10 #204E10

monochromatic

#0A0519 #0B061B #1F104E #331A81 #4725B4

Accessibility & contrast

On white

16.90

#1F104E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#1F104E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F104E

16.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F104E	#FFFFFF	#000000	##FFFFFF
##1F104E	1.00	16.90	1.24	16.90
#FFFFFF	16.90	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E50

Deuteranopia (green-blind)

#001B4D

Tritanopia (blue-blind)

#0A212E

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #1f104e;
/* rgb */ color: rgb(31, 16, 78);
/* oklch */ color: oklch(24.1% 0.106 286.5);

Tailwind

colors: {
  custom: {
    50: '#615080',
    500: '#1f104e',
    950: '#000000',
  },
}

SCSS

$custom: #1f104e;
$custom-light: #615080;
$custom-dark: #000000;

JSON

{
  "hex": "#1f104e",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 78
  },
  "hsl": {
    "h": 254.516,
    "s": 65.957,
    "l": 18.431
  },
  "oklch": {
    "l": 0.24116,
    "c": 0.10624,
    "h": 286.5
  },
  "luminance": 0.01212
}

Semantic roles & 50–950 ramp

primary

#1F104E

secondary

#738832

accent

#E93FC0

background

#F6F4F7

surface

#EBE7EE

border

#C6C3C9

text

#05020A

muted

#7A787C

Preview Lab

Preview with #1F104E

Body copy rendered with the generated semantic roles for this colour.

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